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Commit 565291c6 authored by Johannes Berg's avatar Johannes Berg Committed by Luca Coelho
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iwlwifi: pcie: only apply retention workaround on 9000-series A-step 



Due to a hardware issue, certain power saving had to be
disabled. However, this issue was fixed in B-step, so the
workaround only needs to apply to A-step.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent 779e0513

drivers/net/wireless/intel/iwlwifi/pcie/rx.c

+13 −6
Original line number Diff line number Diff line
@@ -761,6 +761,15 @@ static void iwl_pcie_rx_hw_init(struct iwl_trans *trans, struct iwl_rxq *rxq) 


void iwl_pcie_enable_rx_wake(struct iwl_trans *trans, bool enable)

{

	if (trans->cfg->device_family != IWL_DEVICE_FAMILY_9000)

		return;



	if (CSR_HW_REV_STEP(trans->hw_rev) != SILICON_A_STEP)

		return;



	if (!trans->cfg->integrated)

		return;



	/*

	 * Turn on the chicken-bits that cause MAC wakeup for RX-related

	 * values.
@@ -768,13 +777,11 @@ void iwl_pcie_enable_rx_wake(struct iwl_trans *trans, bool enable) 
	 * bug where shadow registers are not in the retention list and their

	 * value is lost when NIC powers down

	 */

	if (trans->cfg->integrated) {

	iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL,

		    CSR_MAC_SHADOW_REG_CTRL_RX_WAKE);

	iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTL2,

		    CSR_MAC_SHADOW_REG_CTL2_RX_WAKE);

}

}



static void iwl_pcie_rx_mq_hw_init(struct iwl_trans *trans)

{